Mary McDonald-Lewis (September 24, 1953), is a American voice actor. Mary has voiced numerous radio commercials. Her most memorable, is “Mary,” the voice of OnStar, General Motors’ navigation system, heard in millions of cars. In 1990 she left LA and moved to Portland, Oregon, so she could pursue a master's degree in directing, from the University of Portland. Since then she has been heavily in involved in local theater as director and actor. She also serves on the board of the screen actors guild.